Iminyaka yobudala bezinkinga zezidakamizwa?
Ngenxa yokuthi ezimweni eziningi kunzima ukuchaza incazelo yosuku lokukhulelwa, isikhathi sokuthoma siqala ukubala kusukela ngosuku lokuqala lokugcina, sichithwa ukukhishwa kwenyanga.
Ngesikhathi esifanayo, ukuze kube lula ukubala kucatshangwa ukuthi inyanga idlulela ngempela amasonto amane. Ngakho-ke, ukubala ukuthi zingaki izinyanga lokhu, amasonto angu-12 ukubeletha, umama olindelekile ukwanele ukuhlukanisa ngo-4. Ngakho-ke, kuvela ukuthi amasonto angu-12 kukhona izinyanga ezingu-3 ezigcwele izinkinga.
Kwenzekani ku-fetus ngalesi sikhathi?
Ukukhula kwengane esizayo ngalesi sikhathi kungu-6-7 cm, futhi ubukhulu bomzimba wakhe bufinyelela ku-9-13 g.
Inhliziyo isivele isebenzayo futhi ingakapheli iminithi engu-1 yenza ukusikwa okungu-160. Ukushaya kwakhe kubonakala ngokuzwakalayo lapho enza i-ultrasound.
Ngalesi sikhathi, ukuvuthwa kwe-thymus gland kwenzeka, okubangela ukuhlanganiswa kwama-lymphocytes kanye nokwakhiwa komzimba womzimba wengane. Ngesikhathi esifanayo, i-pituitary gland iqala ukukhulula ama-hormone okuthinta ngokuqondile isilinganiso samametrikhi, ukukhula. Ama-leukocyte aqala ukuvela egazini elijikelezayo.
Isibindi se-fetus sikhiqiza i-bile, okuyinto edingekile ukuze inqubo yokugaya ukudla. Kulesi simo, izindonga zamathumbu amancane ziqala ukwenza izinsimbi ezithinta izimbungulu zabo - i-peristaltic.
Ezingxenyeni ze-musculoskeletal, kusetshenzwa i-bone. Emathonjeni yeminwe kuvela amahlombe we-nails. Umzimba ngokwawo ugcwele izinwele ezivela ngaphandle.
Ingane yenza ukuhamba kokuqala emithonjeni yama- amniotic. Ukubuyekezwa kwabo kwenzeka nsuku zonke, futhi ivolumu ayenzi ngaphezu kwe-50 ml.